How to download/compile libqt6pas Framework MacOS

[Theo11]

Hi,

I am using Lazarus on MacOS and I want to do cross development for Mac and Windows. So I want to switch to QT6.

For that I need libqt6pas Framework library on MacOS.

• Where can I download the (compiled) library?
• I found the source to build the framework myself (https://github.com/davidbannon/libqt6pas), but now I am missing qmake. Where can I get qmake?

Thanks,
Theo.

[zeljko]

qmake is inside qt installation directory, eg /Users/foo/qt/6.5.3/macos/bin, use it with full path and it'll compile bindings w/o problems.

[Theo11]

Hi Zeljko,

I don't have this folder.
Where do I get this?

I have downloaded qtbase-everywhere-src-6.8.2 tar file, but it has a different structure you are referring to.

Kind regards,
Theo.

[zeljko]

Ah ,I'm using Qt installer so that's why I have everything at right place. Haven't tried build qt from source on mac, so cannot help you.

[Theo11]

Hi,

I am a step further, I have downloaded QT, brew install qt, and is now in folder /opt/homebrew/Cellar/qt, it's version 6.8.2_1.
So I have now qmake installed. 
Then I did the following:
- cd /Applications/lazarus/lcl/interfaces/qt6/cbindings
- qmake
- make
- make install
No errors, then I did:
- cd /Library/Frameworks
- ln -s /opt/homebrew/lib/Qt6Pas.framework .

Changed to QT6 widget in Lazaurs and added /Library/Frameworks/ to the library path.
When compiling the code I get a link error:
- Error: ld: framework 'Qt6Pas' not found

What is missing?
Any help?

Thanks,
Theo.

[zeljko]

Add -L/Library/Frameworks to the lazarus build options.

[Theo11]

I have already added the /Library/Frameworks, but still no success.
These are my compiler options:
/usr/local/bin/fpc
-Tdarwin
-Paarch64
-MObjFPC
-Scghi
-O1
-gw3
-gl
-l
-vewnhibq
-Filib/aarch64-darwin
-Fl/Library/Frameworks
-Fu/Applications/lazarus/lcl/units/aarch64-darwin/qt6
-Fu/Applications/lazarus/lcl/units/aarch64-darwin
-Fu/Applications/lazarus/components/freetype/lib/aarch64-darwin
-Fu/Applications/lazarus/components/lazutils/lib/aarch64-darwin
-Fu/Applications/lazarus/packager/units/aarch64-darwin
-Fu.
-FUlib/aarch64-darwin
-FE.
-osdmanager
-dLCL
-dLCLqt6

Any hints?

Theo.

[PetrHlozek]

The same problem here. Just cloned the recent master.

did:

Code: Pascal  [Select][+][-]

1. make bigide LCL_PLATFORM=qt6

Code: Pascal  [Select][+][-]

1. (9009) Assembling pkgmanager
2. /Users/petr/tmp/lazarus/ide/lazarus.pp(78,5) Hint: (5023) Unit "FPCUnitTestRunner" not used in Lazarus
3. (9009) Assembling lazarus
4. (9022) Compiling resource ../units/aarch64-darwin/qt6/lazarus.or
5. (9015) Linking ../lazarus
6. -macosx_version_min has been renamed to -macos_version_min
7. ld: warning: -multiply_defined is obsolete
8. ld: warning: ignoring duplicate libraries: '-lc'
9. ld: framework 'Qt6Pas' not found
10. An error occurred while linking
11. Error: (9013) Error while linking
12. Fatal: (10026) There were 1 errors compiling module, stopping
13. Fatal: (1018) Compilation aborted
14. make[2]: *** [lazarus] Error 1
15. make[1]: *** [bigide] Error 2
16. make: *** [idebig] Error 2

Without qt6:

Code: Pascal  [Select][+][-]

1. (9015) Linking ../lazarus
2. -macosx_version_min has been renamed to -macos_version_min
3. ld: warning: -multiply_defined is obsolete
4. ld: warning: ignoring duplicate libraries: '-lc'
5. ld: warning: no platform load command found in '/Users/petr/tmp/lazarus/units/aarch64-darwin/cocoa/lazarus.or', assuming: macOS
6. ./../ppaslink.sh: line 9: 90805 Segmentation fault: 11  /Library/Developer/CommandLineTools/usr/bin/ld -weak_framework AppKit -weak_framework UserNotifications -order_file ../symbol_order.fpc -multiply_defined suppress -L. -o ../lazarus `cat ../link90210.res` -filelist ../linkfiles90210.res
7. An error occurred while linking
8. Error: (9013) Error while linking
9. Fatal: (10026) There were 1 errors compiling module, stopping
10. Fatal: (1018) Compilation aborted
11. make[2]: *** [lazarus] Error 1
12. make[1]: *** [bigide] Error 2
13. make: *** [idebig] Error 2

Any ideas, please? Thank you!

[dbannon]

Not an answer, a suggestion.

The beauty of Lazarus is you code will (almost) work perfectly using the native widget set. So, write your code for (eg) Windows using Windows default, win32 the move it to the Mac, the default is now Cocoa, it will probably compile and run as expected. Yes, from time to time, you might need the occasional {$ifdef WINDOW} etc to cover up an odd difference between widget sets, so, good idea to test cross platform frequently.

When you get to moving it to Linux, yep, I strongly recommend Qt6 not the default Gtk2.

Davo

[TRon]

Any ideas, please? Thank you!

Can't answer the qt issue (maybe the following solves both issues, dunno) but see this thread.